3 institutions reported holding $142,629 of SPIRAX GROUP PLC-UNSP ADR (SPXSY) in SEC 13F filings for 2026-03-31. Largest institutional holders: GAMMA Investing LLC ($67,611), RHUMBLINE ADVISERS ($60,730), Salomon & Ludwin, LLC ($14,288). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GAMMA Investing LLC | $67,611 | 1,484 | Trimmed |
| 2 | RHUMBLINE ADVISERS | $60,730 | 1,333 | Added |
| 3 | Salomon & Ludwin, LLC | $14,288 | 307 | Added |
Source: SEC Form 13F filings · as of 2026-03-31